[srslte-users] Why setting sampling rate multiplied by 4?

[Ismael Gomez]

Hi Enes,

Yes I think it should work well setting the master clock rate to the
sampling rate. I think at some time we found better results in terms of
USRP latency when operating at low sampling rates. But that might be fixed
already. Have you tried setting it to the sampling rate?

regards

On Mon, 10 Apr 2017 at 15:52 Enes ÜNAL <aenesunal at gmail.com> wrote:

> Hello,
>
> I was trying to understand srsLTE examples step-by-step, while I'm doing
> it I just saw this part on example (cell_measurement.c, code is below)
>
> As I see, it sets sampling rate to 4 times the original if original one is
> below 10e6. What does it mean? Without this part, keeping the original
> sampling rate, the example application should work well, right?
>
> Thanks, Enes.
>
> if (srate < 10e6) {
>    srslte_rf_set_master_clock_rate(&rf, 4 * srate);
> } else {
>    srslte_rf_set_master_clock_rate(&rf, srate);
> }
>
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